5” flush ceiling diffuser with loudspeaker. ABS frameless "design" container suitable for 100V lines with built-in fire / flame protection cover. 9W maximum power. Low loss transformer from 6W, 3W, 1.5 W @100 V. Sound pressure 96.5 dB +/ 1dB SPL at 6W / 1 m. Frequency response 130 Hz 14K Hz. Colour white RAL 9003 and red cover (RAL 3000). Dimensions Φ 192 mm x 113 mm. Installation hole Φ 170 mm. Weight 0.68 Kg Protection rating IP54 type B EN54 24. Special design for clean and humid environments. Resistant to salt.